Locomotive-cylinder cock.



J. E. GLEASON. LOGOMOTIVE CYLINDER COCK. ABPLIOATION FILED MAR.27,1906.

Patented Mar. 22, 1910.

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Patented Mar.22, 1910.

J. E. GLEASON. LOOOMOTIVE GYLINDER COOK. APPLIOATION 11,111)MAB.27,1906.

, L: i.. rnw I l lllr IIIT LOCOMOTIVE -CYLINDER COCK.

Application filed March 27,

To all whom it may concern:

Be it known that I, JOHN E. GLEASON, a citizen of the United States, anda resident of Havelock, in the county of Lancaster and State ofNebraska, have invented a certain new and useful Pneumatic Appliance forthe Operation of Locomotive-Cylinder Cocks.

As ordinarily constructed, locomotives are provided with a mechanismcomprising a number of rods, brackets, a dumping shaft, shaft arms andboxes, used to operate the locomotive cylinder cocks.

The aim of my invention is to eliminate these instrumentalities andprovide a simpler but equally positive appliance, as will be describedmore fully hereinafter and finally pointed out in the claims.

In the accompanying drawings I have shown in Figure 1 a broken elevationof a locomotive disclosing the cab and one of the locomotive cylindersto which my appliance is connected. Fig. 2 shows an enlarged detachedsectional detail of the operating air cylinder as used in my invention.Fig. 3 shows a bottom view of one of the relief cocks. Fig. 4 is anenlarged sectional view of one of the relief cocks.

It is essential that the cylinder cocks be open at all times while thelocomotive is at rest to permit the condensed vapors to find a readyescape out of the steam chest and cylinders.

It might be stated that my pneumatically operated appliance can beconstructed for much less than what the usually employed appliancecosts, while no changes need be made in the style or construct-ion ofthe cylinder cocks now in use as my device may be readily applied to anyand all kinds of cylinder cocks.

In the accompanying drawings I have shown at A, a broken portion of alocomotive provided with the cylinder 6, the main air reservoir aprovided with a pipe 2, which is led to the brake valve 1, as is usualin locomotive construction.

The air supply pipe 2 is provided with a T as is shown at 3 positionedbetween the reservoir and the brake valve, and from this T extends thepipe 4, which is provided with the air cock 5, from which cock extendsthe pipe 6, leading to the brake valve 1.

To the cylinder 6, of the locomotive are secured the similar reliefcocks 1 and 2. Secured to the necks 5 of these cocks is theSpecification of Letters Patent.

Patented Mar. 22, 1910.

1906. Serial No. 308,218.

yoke bar a, which carries the air cylinder 8, this cylinder beingprovided with two securmg cars 23 as shown, through which suitable boltsare passed in securing the cylinder to the yoke bar. Held within thisoperating cylinder 8 is a piston 31 provided with a coil spring 32 whichcoils about the piston rod 9, and is cushioned at one end against thepiston 31 and at the other against the inner end of the cylinder 8. Thespring 32 is compressed during the operation of the locomotive butexpands after the air is cut out, an escape opening being providedwithin the three way cock 5 located within the locomotive cab.

Extending from the relief cocks 1 and 2 are suitable guide ears marked13 and 16 respectively which guide ears slidably hold the cock rod 12,as shown in the drawing. Secured to the cock rod 12, is a cross head 14,which extends upward a suitable dis tance and is provided with thesleeve 11, and set bolt 10, so that this cross head 14 may be adjustablysecured to the rod 12.

Secured to the yoke bar a, is a stop pin 20 used to check the movementof the cross head in one direction.

By means of a suitable head 26 the piston rod 9 is secured to the crossheads 14 as shown.

The relief cocks 1 and 2 are similar in construction, so I will describethe one marked 2 and shown in Figs. 3 and 4. As shown the housing of thecooks have one end 22, slightly tapered and provided with suitableescape openings 0, while the opposite fiat end 23, has the threadedopenings 24. Held within this opening 24, is the cap 25, having thecentral opening 26, within which is held one end of the valve stem 27carrying the cone valve 28, working against the valve seat 29.Interposed between the cap and cone 28, and held upon the stem 27, isthe coil spring 30, forming a spring held normally closed valve,preventing an escape of air out of the cylinder through the openings 0,unless the cone 28, is unseated. The stems 27 at all times protrudebeyond the cock housing.

It is of course understood that the cock rod 12 Works parallel with thecylinder 8 and this rod 12 is provided with the stop head 3 at one endstopped against the ear 16 while at the opposite end I rovide theadjustably secured dog 14 held by means of a suitable bolt to the cockrod 12. The

cylinder rod l2 is provided with a second adjustably secured dog 15 alsoheld by means of a suitable bolt, these dogs being provided with theupwardly extending lugs marked 13 and 4E respectively. These lugs comeinto engagement with the stems 27 of the cone valves.

In Figs. 1 and 4: the two cylinder cocks are shown in their closedcondition. It should be borne in mind that these relief cocks areprovided with the escape openings 0, permitting an escape of steam tothe air through these cocks whenever their valves 28 are unseated. Theserelief cocks are open at all times while the engine is at rest, and thisis accomplished in that as soon as the engine or locomotive comes torest, the operator actuates the air cock 5, which is provided with asuitable discharge opening so that the air supply is cut o'lt from theoperating cylinder 8. As a result then of the spring 32 within thiscylinder, the piston rod 9, is forced inward actuating the rod 12, tocarry the lugs 13 and a into engagement with the projecting stems of thevalves 28 opening these cocks and permitting the free escape of thesteam and vapors of condensation within the cylinder 1). In order toagain close these relief cocks the locomotive operator simply actuatesthe air cock 5. This cock is conveniently placed within the engineerscab so that the same may be actuated by the operator without leaving hisseat. By this means I provide an inexpensive operative device insuringthe cylinder cocks being open at all. times while the locomotive is atrest.

Having thus described my said invention, what I claim as new and desireto secure by United States Letters Patent is:

v1. The combination with a locomotive cylinder, of a relief cock housingsecured near each end and communicating with said cylinder, each housinghaving an escape opening a guide ear and provided with a threadedopening, a stem guiding opening and a valve seat held in alinement, of acap within each of said threaded openings having a central recess, avalve stem slidably held within each recess and guiding opening andcarrying an integral valve arranged for coaction with said seats, aspring carried by each stem interposed between a valve and cap, eachstem projecting beyond its housing, a rod slidably held within saidguide ears, a cross head adjustably carried by said rod, a dog securednear each end of said rod having a lug arranged to contact at times withsaid stems, and means to actuate said cross head.

2. The combination with a locomotive cylinder, of a relief cock housingsecured near each end and communicating with said cylinders, eachhousing having an escape opening and a guide ear, of a yoke membercarried by said cock housing each housing provided with a threadedopening, a stem guiding opening and a valve seat, a cap within each ofsaid threaded openings having a central recess, a valve stem slidablyheld within each recess and guiding opening and carrying an integralvalve arranged for coaction with said seat, a spring carried by eachstem interposed between a valve and ca p each stem projecting beyond itshousing, a rod slidably held within said guide ears, a cross headadjustably carried by said rod a dog secured near each end of said rodhaving a lug arranged to contact at times with said stems, a cylindersecured to said yoke bar, a piston within said cylinder, a piston rodcarried by said piston and secured to said cross head, and a motivefluid conduit communicating with said cylinder all arranged as and forthe purpose set forth.

3. In a device of the character described, a relief cock housing carriednear each end of a steam cylinder and communicating therewith eachhousing having an escape opening and a guide ear, of a yoke bar carriedby said cock housing, a stop pin secured to said yoke bar, each housinghaving a threaded opening, a stem guiding opening and afvalve seat, acap within each of said threaded openings having a central recess, avalve stem slidably held within each recess and guiding opening andcarrying an integral valve arranged for coaction with said seat, aspring carried by each stem interposed between a valve and cap each stemprojecting beyond its housing, a rod slidably held within said guideears, a cross head adjustably carried by said rod and arranged at timesto contact with said stop pin, a dog secured near each end of said rodiaving a lug arranged to contact at times with said stems, and means toactuate said cross head.

Signed in the presence of two witnesses.

JOHN E. GLEASON.

lVitnesses J. W. Hrrorrooon, A. A. Evans.

